公开(公告)号：US20240265373A1

公开(公告)日：2024-08-08

申请号：US18160110

申请日：2023-01-26

Applicant: VMware, Inc.

Inventor： Alin Tomescu ,  Adithya Bhat ,  Ittai Abraham ,  Guy Gueta ,  Binyamin Pinkas ,  Avishay Yanai

IPC: G06Q20/36 ,  G06Q20/38 ,  G06Q20/40

CPC classification number: G06Q20/3678 ,  G06Q20/389 ,  G06Q20/4014

Abstract: Disclosed are examples of accountable decentralized anonymous payment systems and methods. One such method comprises storing, in a digital wallet, a digital coin that has been signed by a bank computing device; rerandomizing the digital coin and a coin signature to produce a new version of the digital coin that is anonymous with respect to an owner of the digital coin; sending the new version of the digital coin to a recipient computing device; computing a nullifier for the new version of the digital coin using a pseuodorandom function over a serial number of the digital coin; sending the nullifier for the new version of the digital coin to the bank computing device; and providing the bank computing device a zero knowledge proof that a value of the nullifier for the new version of the digital coin is correct and is the same as a nullifier of the digital coin.